.page-about {
  --about-pad: clamp(56px, 8vw, 112px);
  position: relative;
}

/* ---------- 通用小节头部 ---------- */
.page-about .about-idx {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.page-about .about-idx__num {
  color: var(--c-gold);
  flex: none;
}

.page-about .about-idx__line {
  flex: none;
  width: clamp(28px, 6vw, 72px);
  height: 1px;
  background: var(--line);
}

.page-about .about-idx__label {
  color: var(--c-slate);
}

.page-about .about-idx + .section-title {
  margin-top: 0;
}

.page-about .breadcrumb {
  padding-top: clamp(14px, 2vw, 24px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(40px, 6vw, 84px) 0 clamp(44px, 6vw, 92px);
  border-bottom: 1px solid var(--line-soft);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(122, 77, 255, .16), transparent 62%),
    radial-gradient(90% 80% at 0% 100%, rgba(212, 175, 55, .09), transparent 60%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
  background-size: 84px 84px;
  -webkit-mask-image: linear-gradient(155deg, #000 0%, transparent 70%);
  mask-image: linear-gradient(155deg, #000 0%, transparent 70%);
}

.page-about .about-hero > .wrap {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(32px, 5vw, 56px);
  align-items: end;
}

.page-about .about-hero__lead h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.1rem, 6.2vw, 4.4rem);
  line-height: 1.12;
  letter-spacing: .01em;
  margin: 0 0 20px;
  color: var(--c-ivory);
}

.page-about .about-hero__lead .lede {
  margin: 0;
  max-width: 34em;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-hero__panel {
  position: relative;
  padding: clamp(22px, 3.2vw, 36px);
  border: 1px solid var(--line);
  background: linear-gradient(158deg, rgba(14, 42, 77, .88) 0%, rgba(3, 7, 15, .94) 100%);
}

.page-about .about-hero__panel::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 44px;
  height: 44px;
  border-top: 1px solid var(--c-gold-hi);
  border-left: 1px solid var(--c-gold-hi);
  pointer-events: none;
}

.page-about .about-hero__panel-code {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--c-slate);
}

.page-about .about-hero__panel-ver {
  margin: 14px 0 2px;
  font-family: var(--font-serif);
  font-size: clamp(2.6rem, 7vw, 4rem);
  line-height: 1;
  letter-spacing: .02em;
  background: linear-gradient(100deg, var(--c-gold-hi) 0%, var(--c-gold) 46%, #8a6d1f 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.page-about .about-hero__panel-cap {
  margin: 0;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--c-slate);
}

.page-about .about-hero__facts {
  display: grid;
  gap: 12px;
  margin: 26px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-hero__facts > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}

.page-about .about-hero__facts dt {
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--c-slate);
}

.page-about .about-hero__facts dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--c-ivory);
}

/* ---------- 规模数据带 ---------- */
.page-about .about-scale {
  border-bottom: 1px solid var(--line-soft);
  background: rgba(3, 7, 15, .55);
}

.page-about .about-scale__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px 18px;
  margin: 0;
  padding: clamp(28px, 4vw, 48px) 0;
  list-style: none;
}

.page-about .about-scale__item {
  padding-left: 16px;
  border-left: 1px solid var(--line);
}

.page-about .about-scale__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 3vw, 1.85rem);
  line-height: 1.2;
  color: var(--c-gold-hi);
  letter-spacing: .01em;
}

.page-about .about-scale__label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--c-slate);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  position: relative;
  overflow: hidden;
  padding: var(--about-pad) 0;
  background: linear-gradient(180deg, var(--c-deep) 0%, var(--c-black) 100%);
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-timeline__visual {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: .2;
  pointer-events: none;
}

.page-about .about-timeline__visual img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-about .about-timeline > .wrap {
  position: relative;
  z-index: 1;
}

.page-about .about-axis {
  position: relative;
  margin: clamp(36px, 5vw, 64px) 0 0;
  padding: 0 0 0 28px;
  list-style: none;
}

.page-about .about-axis::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--c-gold-hi) 0%, var(--c-gold) 42%, rgba(212, 175, 55, .1) 100%);
}

.page-about .about-axis__item {
  position: relative;
  padding-bottom: clamp(34px, 4.6vw, 56px);
}

.page-about .about-axis__item:last-child {
  padding-bottom: 0;
}

.page-about .about-axis__item::before {
  content: "";
  position: absolute;
  left: -33px;
  top: 10px;
  width: 11px;
  height: 11px;
  border: 1px solid var(--c-gold);
  background: var(--c-deep);
  transform: rotate(45deg);
}

.page-about .about-axis__item:last-child::before {
  background: var(--c-gold-hi);
  box-shadow: 0 0 0 4px rgba(212, 175, 55, .14);
}

.page-about .about-axis__year {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--c-gold);
}

.page-about .about-axis__title {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-size: clamp(1.15rem, 2.4vw, 1.6rem);
  line-height: 1.4;
  color: var(--c-ivory);
}

.page-about .about-axis__text {
  margin: 0;
  max-width: 44em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-slate);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: var(--about-pad) 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(32px, 5vw, 64px);
}

.page-about .about-team__intro .prose {
  margin-bottom: 16px;
}

.page-about .about-team__bars {
  display: grid;
  gap: clamp(22px, 3vw, 32px);
  align-content: start;
}

.page-about .about-team__row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px 14px;
  align-items: baseline;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-team__name {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--c-ivory);
}

.page-about .about-team__count {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--c-gold-hi);
}

.page-about .about-team__track {
  grid-column: 1 / -1;
  position: relative;
  height: 6px;
  background: rgba(143, 163, 184, .14);
  overflow: hidden;
}

.page-about .about-team__fill {
  display: block;
  height: 100%;
  transform-origin: left center;
  animation: about-bar-grow 900ms var(--ease) both;
}

.page-about .about-team__fill--tech {
  width: 66.7%;
  background: linear-gradient(90deg, var(--c-gold), var(--c-gold-hi));
  animation-delay: 80ms;
}

.page-about .about-team__fill--content {
  width: 20.4%;
  background: linear-gradient(90deg, var(--c-purple), #a98bff);
  animation-delay: 180ms;
}

.page-about .about-team__fill--service {
  width: 12.9%;
  background: linear-gradient(90deg, var(--c-jade), #5fe0b6);
  animation-delay: 280ms;
}

.page-about .about-team__desc {
  grid-column: 1 / -1;
  margin: 4px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-slate);
}

.page-about .about-team__figure {
  margin: clamp(40px, 5vw, 64px) 0 0;
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--line-soft);
}

.page-about .about-team__figure figcaption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-slate);
}

@keyframes about-bar-grow {
  from {
    transform: scaleX(0);
  }
  to {
    transform: scaleX(1);
  }
}

/* ---------- 内容体系 ---------- */
.page-about .about-content {
  padding: var(--about-pad) 0;
  border-bottom: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(14, 42, 77, .5) 0%, rgba(7, 26, 51, 1) 100%);
}

.page-about .about-content__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(32px, 5vw, 60px);
  margin-top: clamp(32px, 4vw, 52px);
}

.page-about .about-content__sub {
  margin: 24px 0 18px;
  font-family: var(--font-serif);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--c-ivory);
}

.page-about .about-content__list {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-content__list > li {
  padding: 16px 0 16px 16px;
  border-left: 1px solid var(--line);
}

.page-about .about-content__item-text {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-slate);
}

.page-about .about-content__figure {
  margin: 0;
}

.page-about .about-content__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border: 1px solid var(--line);
  background: rgba(3, 7, 15, .6);
}

.page-about .about-content__figure figcaption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-slate);
}

.page-about .about-content__more {
  margin: clamp(28px, 3.5vw, 44px) 0 0;
}

/* ---------- 协作生态 ---------- */
.page-about .about-partners {
  padding: var(--about-pad) 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-partners__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: clamp(32px, 4vw, 52px);
  border-top: 1px solid var(--line);
}

.page-about .about-partners__card {
  position: relative;
  padding: clamp(24px, 3.4vw, 38px) 0 clamp(24px, 3.4vw, 38px) clamp(20px, 3vw, 34px);
  border-bottom: 1px solid var(--line);
  transition: background-color 260ms var(--ease);
}

.page-about .about-partners__card::before {
  content: "";
  position: absolute;
  left: 0;
  top: clamp(24px, 3.4vw, 38px);
  width: 1px;
  height: 0;
  background: var(--c-gold-hi);
  transition: height 320ms var(--ease);
}

.page-about .about-partners__card:hover::before {
  height: calc(100% - clamp(48px, 6.8vw, 76px));
}

.page-about .about-partners__no {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .26em;
  color: var(--c-gold);
}

.page-about .about-partners__title {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 2.4vw, 1.55rem);
  color: var(--c-ivory);
}

.page-about .about-partners__text {
  margin: 0;
  max-width: 40em;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--c-slate);
}

.page-about .about-partners__more {
  margin: clamp(28px, 3.5vw, 44px) 0 0;
}

/* ---------- 服务时段 ---------- */
.page-about .about-service {
  padding: var(--about-pad) 0;
}

.page-about .about-service__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
  padding: clamp(28px, 4vw, 56px) clamp(22px, 3.6vw, 52px);
  border: 1px solid var(--line);
  background:
    radial-gradient(110% 120% at 100% 0%, rgba(122, 77, 255, .14), transparent 58%),
    linear-gradient(170deg, rgba(14, 42, 77, .72) 0%, rgba(3, 7, 15, .92) 100%);
}

.page-about .about-service__left .prose {
  margin-bottom: 14px;
}

.page-about .about-service__left .prose:last-child {
  margin-bottom: 0;
}

.page-about .about-service__meta {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0 0 24px;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-service__meta > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}

.page-about .about-service__meta dt {
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--c-slate);
}

.page-about .about-service__meta dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14.5px;
  color: var(--c-ivory);
  text-align: right;
}

.page-about .about-service__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-partners__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 clamp(20px, 3vw, 40px);
  }

  .page-about .about-partners__card {
    border-bottom: 0;
  }

  .page-about .about-scale__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: clamp(36px, 5vw, 76px);
  }

  .page-about .about-team__grid {
    grid-template-columns: 5fr 7fr;
    gap: clamp(36px, 5vw, 76px);
  }

  .page-about .about-content__grid {
    grid-template-columns: 7fr 5fr;
    gap: clamp(36px, 5vw, 68px);
    align-items: start;
  }

  .page-about .about-service__inner {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }
}

@media (min-width: 1100px) {
  .page-about .about-axis {
    padding-left: 34px;
  }

  .page-about .about-axis__item::before {
    left: -39px;
  }
}

@media (max-width: 480px) {
  .page-about .about-hero__actions .btn,
  .page-about .about-service__actions .btn {
    width: 100%;
    text-align: center;
  }

  .page-about .about-service__meta > div {
    flex-direction: column;
    gap: 4px;
  }

  .page-about .about-service__meta dd {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-team__fill {
    animation: none;
  }

  .page-about .about-partners__card::before {
    transition: none;
  }
}